290145852 has 36 divisors (see below), whose sum is σ = 749033376. Its totient is φ = 94656960.

The previous prime is 290145799. The next prime is 290145857. The reversal of 290145852 is 258541092.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290145857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84049 + ... + 87432.

Almost surely, 2^290145852 is an apocalyptic number.

It is an amenable number.

290145852 is an abundant number, since it is smaller than the sum of its proper divisors (458887524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290145852 is a wasteful number, since it uses less digits than its factorization.

290145852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171538 (or 171533 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 290145852 is about 17033.6681897940. The cubic root of 290145852 is about 662.0215428531.

The spelling of 290145852 in words is "two hundred ninety million, one hundred forty-five thousand, eight hundred fifty-two".